/* ======================================================================
   styles.css — Універсальний сучасний темно-синій дизайн для сайту-візитки
   ПІДКАЗКА:
   - Перші секції коментарів (MANDATORY) містять стилі для обов'язкових елементів сторінки.
   - Нижче є розділ (OPTIONAL) з додатковими блоками/модулями, що можуть бути
     використані лише на головній чи окремих сторінках.
   - Підтримка адаптації (mobile-first і десктоп), анімації включені, є
     підтримка prefers-reduced-motion.
   - Підключення шрифтів: Google Fonts (робиться через @import тут).
   ====================================================================== */

/* ---------------------------
   Fonts (Google) - можна замінити
   --------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800&display=swap');

:root{
  /* Palette: dark-blue theme */
  --bg-010: #071029;    /* page background (very dark navy) */
  --bg-020: #0b1a33;    /* secondary bg */
  --panel:   #0f2a46;   /* panels / cards */
  --accent-1: #1f8fff;  /* bright blue accent */
  --accent-2: #6dd3ff;  /* lighter blue highlight */
  --muted:   #98a7bf;   /* muted text */
  --text:    #e6eef8;   /* primary text */
  --glass:   rgba(255,255,255,0.04);
  --glass-2: rgba(255,255,255,0.02);
  --success: #2ec27e;
  --danger:  #ff6b6b;

  /* layout */
  --nav-collapsed-w: 64px;   /* width of collapsed left rail */
  --nav-expanded-w: 280px;    /* expanded width */
  --content-max-w: 1280px;
  --radius: 12px;
  --transition-fast: 180ms;
  --transition: 300ms cubic-bezier(.2,.9,.2,1);
  --shadow-1: 0 6px 20px rgba(2,8,23,0.6);
  --shadow-2: 0 10px 40px rgba(2,6,20,0.6);
}

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root { --transition: 1ms; --transition-fast: 1ms; }
}

/* ===========================
   BASE RESET (lightweight)
   =========================== */
*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, var(--bg-010) 0%, var(--bg-020) 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.4;
  font-size: 16px;
}

img { display: block; max-width: 100%; height: auto; }

/* Visually hidden for screen readers */
.sr-only {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

/* Links & buttons baseline */
a { color: inherit; text-decoration: none; }
a:focus { outline: 3px solid rgba(31,143,255,0.18); outline-offset: 2px; border-radius: 6px; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
button:focus { outline: 3px solid rgba(109,211,255,0.12); outline-offset: 2px; border-radius: 6px }

/* Container utils */
.container {
  width: 100%;
  max-width: var(--content-max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   MANDATORY: SIDE NAV (left sliding rail)
   =========================== */

/* Outer nav wrapper (fixed) */
.side-nav {
  position: fixed;
  top: 20px;
  left: 20px;
  height: calc(100% - 40px);
  width: var(--nav-collapsed-w);
  z-index: 1200;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  transition: width var(--transition);
  pointer-events: auto;
}

/* Toggle visible strip (collapsed) */
.side-nav__toggle {
  width: var(--nav-collapsed-w);
  height: var(--nav-collapsed-w);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: 12px;
  box-shadow: var(--shadow-1);
  color: var(--accent-1);
  font-weight: 700;
  transition: transform var(--transition-fast);
}

/* Menu panel that slides out */
.side-nav__menu {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateX(-92%); /* collapsed off-canvas (mostly hidden) */
  width: var(--nav-expanded-w);
  height: 100%;
  padding: 20px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(12,28,48,0.96), rgba(10,22,38,0.9));
  box-shadow: var(--shadow-2);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
}

/* When parent hovered on desktop — expand */
.side-nav:hover .side-nav__menu,
.side-nav.open .side-nav__menu {
  transform: translateX(6px); /* slightly inset so toggle still visible */
}

/* Menu content */
.side-nav__menu .nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  color: var(--text);
  border-radius: 8px;
  transition: background var(--transition);
  font-weight: 600;
  letter-spacing: 0.2px;
}
.side-nav__menu .nav-link:hover,
.side-nav__menu .nav-link:focus {
  background: linear-gradient(90deg, rgba(31,143,255,0.06), rgba(109,211,255,0.03));
  color: var(--accent-2);
}

/* Language buttons */
.nav-language { margin-top: auto; display:flex; gap:8px; }
.lang-btn {
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.02);
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.6px;
}
.lang-btn:hover { background: rgba(31,143,255,0.06); color: var(--accent-1); }

/* Handle small screens: collapse nav to top-left toggle only */
@media (max-width: 900px) {
  .side-nav {
    left: 14px;
    top: 14px;
    width: var(--nav-collapsed-w);
    height: var(--nav-collapsed-w);
    background: linear-gradient(180deg, rgba(4,10,20,0.98), rgba(7,14,28,0.98));

  }
  .side-nav__menu {
    transform: translateX(-110%);
    width: 100%;
    height: 100vh;
    border-radius: 0;
    left: 0;
    top: 0;
    padding: 28px;
    background: linear-gradient(180deg, rgba(4,10,20,0.98), rgba(7,14,28,0.98));
    overflow-y: auto;
  }
  /* When open (JS should add .open on .side-nav) show full-screen */
  .side-nav.open .side-nav__menu { transform: translateX(0); }
  /* keep toggle visible */
  .side-nav__toggle { z-index: 1250; }
}

/* ===========================
   MANDATORY: MAIN LAYOUT
   =========================== */

.main-content {
  min-height: 100vh;
  padding: 36px 20px;
  padding-left: calc(var(--nav-collapsed-w) + 32px); /* leaves space for collapsed rail */
  transition: padding-left var(--transition);
}

/* when nav expanded, content should shift — JS can toggle .nav-expanded on body */
body.nav-expanded .main-content {
  padding-left: calc(var(--nav-expanded-w) + 32px);
}

/* On mobile, main content ignores left rail spacing */
@media (max-width: 900px) {
  .main-content {
    padding-left: 20px;
    padding-top: calc(var(--nav-collapsed-w) + 28px);
  }
}

/* Headings */
h1, h2, h3 {
  margin: 0 0 12px 0;
  color: var(--text);
  font-weight: 700;
  line-height: 1.05;
}
h1 { font-size: clamp(1.6rem, 3.6vw, 2.6rem); }
h2 { font-size: clamp(1.2rem, 2.6vw, 1.6rem); }

/* Paragraph & utility */
p { color: var(--muted); margin: 0 0 16px 0; font-size: 1rem; }
.lead { color: var(--text); font-size: 1.05rem; font-weight: 500; }

/* Panels / cards */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-1);
  border: 1px solid rgba(255,255,255,0.03);
}

/* ===========================
   MANDATORY: HERO / GALLERY
   =========================== */

.hero {
  margin: 0 auto 28px auto;
  max-width: var(--content-max-w);
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
  background: linear-gradient(180deg, rgba(6,14,28,0.6), rgba(8,18,32,0.6));
  border: 1px solid rgba(255,255,255,0.03);
}

/* hero internal layout */
.hero .hero-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  align-items: stretch;
}

/* each item is a framed image with caption overlay */
.hero-item {
  position: relative;
  min-height: 220px;
  overflow: hidden;
  border-radius: 10px;
  background: var(--glass-2);
}
.hero-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
  transform-origin: center center;
  backface-visibility: hidden;
}
.hero-item:hover img { transform: scale(1.04); }

/* caption overlay */
.hero-item figcaption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(3,10,20,0.6), rgba(12,24,40,0.45));
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.02);
}

/* Responsive hero layout: single column on small screens */
@media (max-width: 900px) {
  .hero { border-radius: 10px; }
  .hero .hero-gallery { grid-template-columns: 1fr; gap: 12px; }
  .hero-item { min-height: 300px; }
}

/* ===========================
   MANDATORY: PROJECTS SLIDER
   =========================== */

/* slider wrapper */
.game-slider {
  margin: 22px auto 0; /* зверху 22px, по горизонталі авто для центрування */
  position: relative;
  overflow: visible;
  border-radius: 12px;
  width: 90%; /* ширина 90% від сторінки */
  max-width: 1300px; /* опціонально, щоб не сильно розтягувалося на великих екранах */
}


/* slides container */
.slides {
  position: relative;
  display: block;
  min-height: 220px;
  width: 100%;      /* займає всю ширину батьківського .game-slider */
  margin: 0 auto;   /* центрування по горизонталі */
}


/* each slide */
.slide {
  position: relative;
  display: none; /* JS shows one at a time; fallback for CSS-only show first */
  padding: 18px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(6,12,22,0.4), rgba(5,10,18,0.25));
  border: 1px solid rgba(255,255,255,0.02);
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
}

/* visible slide */
.slide[aria-hidden="false"],
.slide[style*="display: block"] {
  display: block;
  opacity: 1;
}

/* content inside slide (Steam embed placeholder) */
.steam-embed {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.steam-embed h3 { margin: 0 0 4px 0; color: var(--accent-2); }
.steam-embed p { margin: 0; color: var(--muted); max-width: 68%; }

/* slider controls */
.slider-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
}
.slider-controls button {
  padding: 8px 12px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.03);
  box-shadow: 0 4px 14px rgba(2,6,20,0.6);
}

/* dots */
.slider-dots { display:flex; gap:8px; margin-left: 12px; align-items:center; }
.slider-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.02);
}
.slider-dot.active { background: linear-gradient(90deg, var(--accent-1), var(--accent-2)); transform: scale(1.2); }

/* make slider responsive */
@media (max-width: 900px) {
  .steam-embed p { max-width: 100%; margin-top: 8px; }
  .slide { padding: 12px; }
}

/* ===========================
   MANDATORY: ABOUT / CONTACT / CTA
   =========================== */

.about, .contact {
  margin: 28px auto 0; /* авто по горизонталі */
  max-width: var(--content-max-w);
  background: linear-gradient(180deg, rgba(7,12,20,0.28), rgba(7,12,20,0.18));
  padding: 18px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.02);
  text-align: left; /* для центрованого тексту всередині */
}


.btn-contact {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  color: #031029;
  font-weight: 700;
  box-shadow: 0 8px 28px rgba(31,143,255,0.12);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-contact:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(31,143,255,0.16); }

/* ===========================
   MANDATORY: FOOTER
   =========================== */

.site-footer {
  margin-top: 48px;
  padding: 18px 20px;
  border-top: 1px solid rgba(255,255,255,0.02);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
}
.site-footer a { color: var(--muted); font-weight: 600; }
.site-footer a:hover { color: var(--accent-1); }

/* ===========================
   MANDATORY: COOKIE / MODAL
   =========================== */

.cookie-modal {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%) scale(0.98);
  min-width: 280px;
  max-width: 560px;
  background: linear-gradient(180deg, rgba(8,16,28,0.98), rgba(8,14,24,0.96));
  border-radius: 12px;
  padding: 18px;
  box-shadow: var(--shadow-2);
  z-index: 1400;
  display: none; /* shown via inline style or aria-hidden */
}
.cookie-modal__content { color: var(--text); }
.cookie-modal__actions { margin-top: 12px; display:flex; gap:8px; justify-content:flex-end; }
.cookie-accept, .cookie-decline {
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,0.02);
  color: var(--text);
}
.cookie-accept { background: linear-gradient(90deg,var(--accent-1),var(--accent-2)); color:#021027; font-weight:700; }



/* Показати з анімацією після завантаження */
.hero.loaded h1,
.hero.loaded p,
.hero.loaded figure {
    opacity: 1;
    transform: translateY(0);
}

/* Hover ефекти для кнопок */
button, .btn-contact {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
button:hover, .btn-contact:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Пульсація слайдера для активного слайда */
.slide {
    opacity: 0;
    transition: opacity 0.5s ease;
}
.slide.active {
    opacity: 1;
    animation: pulse 5s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* Легкий hover для навігаційних елементів */
.nav-link:hover {
    color: #f9d342;
    transform: scale(1.05);
    transition: all 0.3s ease;
};